content/common/media/video_capture_messages.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/memory/shared_memory.h"
   6 #include "content/common/content_export.h"
   7 #include "content/common/media/video_capture.h"
   8 #include "content/public/common/common_param_traits.h"
   9 #include "gpu/command_buffer/common/mailbox_holder.h"
  10 #include "ipc/ipc_message_macros.h"
  11 #include "media/base/video_capture_types.h"
  12
  13 #undef IPC_MESSAGE_EXPORT
  14 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
  15 #define IPC_MESSAGE_START VideoCaptureMsgStart
  16
  17 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
  18                           content::VIDEO_CAPTURE_STATE_LAST)
  19
  20 IPC_ENUM_TRAITS_MAX_VALUE(media::ResolutionChangePolicy,
  21                           media::RESOLUTION_POLICY_LAST)
  22
  23 IPC_STRUCT_TRAITS_BEGIN(media::VideoCaptureParams)
  24   IPC_STRUCT_TRAITS_MEMBER(requested_format)
  25   IPC_STRUCT_TRAITS_MEMBER(resolution_change_policy)
  26 IPC_STRUCT_TRAITS_END()
  27
  28 IPC_STRUCT_BEGIN(VideoCaptureMsg_BufferReady_Params)
  29   IPC_STRUCT_MEMBER(int, device_id)
  30   IPC_STRUCT_MEMBER(int, buffer_id)
  31   IPC_STRUCT_MEMBER(gfx::Size, coded_size)
  32   IPC_STRUCT_MEMBER(gfx::Rect, visible_rect)
  33   IPC_STRUCT_MEMBER(base::TimeTicks, timestamp)
  34   IPC_STRUCT_MEMBER(base::DictionaryValue, metadata)
  35 IPC_STRUCT_END()
  36
  37 IPC_STRUCT_BEGIN(VideoCaptureMsg_MailboxBufferReady_Params)
  38   IPC_STRUCT_MEMBER(int, device_id)
  39   IPC_STRUCT_MEMBER(int, buffer_id)
  40   IPC_STRUCT_MEMBER(gpu::MailboxHolder, mailbox_holder)
  41   IPC_STRUCT_MEMBER(gfx::Size, packed_frame_size)
  42   IPC_STRUCT_MEMBER(base::TimeTicks, timestamp)
  43   IPC_STRUCT_MEMBER(base::DictionaryValue, metadata)
  44 IPC_STRUCT_END()
  45
  46 // TODO(nick): device_id in these messages is basically just a route_id. We
  47 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls.
  48
  49 // Notify the renderer process about the state update such as
  50 // Start/Pause/Stop.
  51 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged,
  52                      int /* device id */,
  53                      content::VideoCaptureState /* new state */)
  54
  55 // Tell the renderer process that a new buffer is allocated for video capture.
  56 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
  57                      int /* device id */,
  58                      base::SharedMemoryHandle /* handle */,
  59                      int /* length */,
  60                      int /* buffer_id */)
  61
  62 // Tell the renderer process that it should release a buffer previously
  63 // allocated by VideoCaptureMsg_NewBuffer.
  64 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,
  65                      int /* device id */,
  66                      int /* buffer_id */)
  67
  68 // Tell the renderer process that a buffer is available from video capture.
  69 IPC_MESSAGE_CONTROL1(VideoCaptureMsg_BufferReady,
  70                      VideoCaptureMsg_BufferReady_Params)
  71
  72 // Tell the renderer process that a texture mailbox buffer is available from
  73 // video capture.
  74 IPC_MESSAGE_CONTROL1(VideoCaptureMsg_MailboxBufferReady,
  75                      VideoCaptureMsg_MailboxBufferReady_Params)
  76
  77 // Notify the renderer about a device's supported formats; this is a response
  78 // to a VideoCaptureHostMsg_GetDeviceSupportedFormats request.
  79 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceSupportedFormatsEnumerated,
  80                      int /* device_id */,
  81                      media::VideoCaptureFormats /* supported_formats */)
  82
  83 // Notify the renderer about a device's format(s) in use; this is a response
  84 // to a VideoCaptureHostMsg_GetDeviceFormatInUse request.
  85 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_DeviceFormatsInUseReceived,
  86                      int /* device_id */,
  87                      media::VideoCaptureFormats /* formats_in_use */)
  88
  89 // Start a video capture as |device_id|, a new id picked by the renderer
  90 // process. The session to be started is determined by |params.session_id|.
  91 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Start,
  92                      int /* device_id */,
  93                      media::VideoCaptureSessionId, /* session_id */
  94                      media::VideoCaptureParams /* params */)
  95
  96 // Pause the video capture specified by |device_id|.
  97 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Pause,
  98                      int /* device_id */)
  99
 100 // Resume the video capture specified by |device_id|, |session_id| and
 101 // |params|.
 102 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_Resume,
 103                      int, /* device_id */
 104                      media::VideoCaptureSessionId, /* session_id */
 105                      media::VideoCaptureParams /* params */)
 106
 107 // Close the video capture specified by |device_id|.
 108 IPC_MESSAGE_CONTROL1(VideoCaptureHostMsg_Stop,
 109                      int /* device_id */)
 110
 111 // Tell the browser process that the renderer has finished reading from
 112 // a buffer previously delivered by VideoCaptureMsg_BufferReady.
 113 IPC_MESSAGE_CONTROL3(VideoCaptureHostMsg_BufferReady,
 114                      int /* device_id */,
 115                      int /* buffer_id */,
 116                      uint32 /* syncpoint */)
 117
 118 // Get the formats supported by a device referenced by |capture_session_id|.
 119 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
 120                      int /* device_id */,
 121                      media::VideoCaptureSessionId /* session_id */)
 122
 123 // Get the format(s) in use by a device referenced by |capture_session_id|.
 124 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
 125                      int /* device_id */,
 126                      media::VideoCaptureSessionId /* session_id */)